Tiered link building helps you grow your website’s authority step-by-step....

https://star-wiki.win/index.php/What%E2%80%99s_a_Good_Tier_1_Link:_Guest_Post_vs_Niche_Edit_vs_PR_Mention%3F

Tiered link building helps you grow your website’s authority step-by-step. Start with Tier 1 links that point directly to your site for strong, high-quality backlinks